We're dividing 21354580 by 127 
The aim is to understand the frequency of 127 in 21354580.

Going ahead to step 1:
When dividing 2 by 127, we get 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 127

Step 2:
127 goes into 21 0 times with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Include the next digit (3) from the dividend after 21, then repeat: 213 / 127

Step 3:
When dividing 213 by 127, we get 1 with a remainder of 86.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 127 from 213, we get 86.
Fetch the next digit (5) from the dividend, attach it to 86 and continue: 865 / 127

Step 4:
When dividing 865 by 127, we get 6 with a remainder of 103.
The next digit of our result is 6. 
Result so far: 16.0
Subtracting 762 from 865 leaves us with 103.
Include the next digit (4) from the dividend after 103, then repeat: 1034 / 127

Moving on to step 5:
The number 127 fits into 1034 8 times, leaving a remainder of 18.
Record the quotient 8 as the next digit in the result. 
Result so far: 168.0
Subtracting 1016 from 1034 leaves us with 18.
Grab the next digit (5) from the dividend, add it to 18, then carry on: 185 / 127

Moving on to step 6:
127 goes into 185 1 times with a remainder of 58.
Put 1 as the next digit of the answer. 
Result so far: 1681.0
If we take 127 away from 185, we end up with 58.
Append the next digit (8) from the dividend to 58 and continue with: 588 / 127

On to step 7:
When dividing 588 by 127, we get 4 with a remainder of 80.
The next digit of our result is 4. 
Result so far: 16814.0
Subtracting 508 from 588 leaves us with 80.
Fetch the next digit (0) from the dividend, attach it to 80 and continue: 800 / 127

Going ahead to step 8:
The number 127 fits into 800 6 times, leaving a remainder of 38.
Put 6 as the next digit of the answer. 
Result so far: 168146.0
If we take 762 away from 800, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 9:
If we divide 380 by 127, we get 2 and a remainder of 126.
Put 2 as the next digit of the answer. 
Result so far: 168146.2
If we subtract 254 from 380, we get 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

On to step 10:
When dividing 1260 by 127, we get 9 with a remainder of 117.
Use 9 as the next digit of our solution. 
Result so far: 168146.29
The remainder is 117 after subtracting 1143 from 1260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Step 11:
If we divide 1170 by 127, we get 9 and a remainder of 27.
The next digit of our result is 9. 
Result so far: 168146.299
Subtracting 1143 from 1170 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

The final result is 168146.299 with a remainder of 0.0027.